Ecological communities, I argue, are objective units of nature if they have structure that regulates their membership. Evidence of such structure in contemporary ecology is scant, but the palaeoecological phenomenon of co-ordinated stasis is a prima facie example of internal regulation. I argue that no individualist attempts to explain away the appearance of internal regulation succeeds. But no internalist model is fully satisfactory, either, in explaining the contrast between pre and post...[Show more]
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